+
/*
* selector is a simple shell command for selection of strings with a
* dynamic pattern-matching.
*
* Copyright (c) 2009 Francois Fleuret
- * Written by Francois Fleuret <francois.fleuret@idiap.ch>
+ * Written by Francois Fleuret <francois@fleuret.org>
*
* This file is part of selector.
*
*
*/
-// Here is how to use it as a super-history-search
-// ./selector -v -f ${HISTFILE}
+// To use it as a super-history-search for bash:
+//
+// alias h='./selector -i -b -v -f <(history)'
+
+// This software is highly Linux-specific, but I would be glad to get
+// patches to make it work on other OS
#include <fstream>
#include <iostream>
using namespace std;
+#define VERSION "1.0"
+
+const int buffer_size = 1024;
+
// Yeah, global variables!
-int buffer_size = 1024;
int nb_lines_max = 1000;
char pattern_separator = ';';
int output_to_vt_buffer = 0;
+int with_colors = 1;
+int zsh_history = 0, bash_history = 0;
+int inverse_order = 0;
+int remove_duplicates = 0;
+
+//////////////////////////////////////////////////////////////////////
+
+// This looks severely Linux-only ...
+
+void inject_into_tty_buffer(char *line) {
+ struct termios oldtio, newtio;
+ tcgetattr(STDIN_FILENO,&oldtio);
+ memset(&newtio, 0, sizeof(newtio));
+ // Set input mode (non-canonical, *no echo*,...)
+ tcsetattr(STDIN_FILENO, TCSANOW, &newtio);
+ // Put the selected line in the tty input buffer
+ for(char *k = line; *k; k++) {
+ ioctl(STDIN_FILENO, TIOCSTI, k);
+ }
+ // Restore the old settings
+ tcsetattr(STDIN_FILENO, TCSANOW, &oldtio);
+}
//////////////////////////////////////////////////////////////////////
}
}
+//////////////////////////////////////////////////////////////////////
+// A quick and dirty hash table
+
+int *new_hash_table(int hash_table_size) {
+ int *result;
+ result = new int[hash_table_size];
+ for(int k = 0; k < hash_table_size; k++) {
+ result[k] = -1;
+ }
+ return result;
+}
+
+int test_and_add(char *new_string, int new_index,
+ char **strings, int *hash_table, int hash_table_size) {
+ unsigned int code = 0;
+
+ for(int k = 0; new_string[k]; k++) {
+ code += int(new_string[k]) << (8 * k%4);
+ }
+
+ code = code % hash_table_size;
+
+ while(hash_table[code] >= 0) {
+ if(strcmp(new_string, strings[hash_table[code]]) == 0) return 1;
+ code = (code + 1) % hash_table_size;
+ }
+
+ hash_table[code] = new_index;
+
+ return 0;
+}
+
//////////////////////////////////////////////////////////////////////
int previous_visible(int current_line, int nb_lines, char **lines, int nb_patterns, char **patterns) {
void update_screen(int *current_line, int *temporary_line, int motion,
int nb_lines, char **lines,
- char *pattern_list,
- int no_blink) {
+ char *pattern_list) {
char buffer[buffer_size];
int console_width = getmaxx(stdscr);
int console_height = getmaxy(stdscr);
- int nb_printed_lines = 1;
-
// First, we find a visible line. In priority: The current, or the
// first visible after it, or the first visible before it.
}
}
- if(!no_blink) {
- clear();
- }
+ clear();
use_default_colors();
addstr("\n");
+ int nb_printed_lines = 0;
+
// Here new_line is either a line number matching the patterns, or -1
if(new_line >= 0) {
}
}
- if(last_line < nb_lines - 1) {
+ if(nb_match < console_height - 1 && last_line < nb_lines - 1) {
last_line++;
while(last_line < nb_lines - 1 && !match(lines[last_line], nb_patterns, patterns)) {
last_line++;
// We fill the rest of the line with blanks if either we did
// not clear() or if this is the highlighted line
- if(no_blink || l == new_line) {
+ if(l == new_line) {
while(k < console_width) {
buffer[k++] = ' ';
}
// Highlight the highlighted line ...
if(l == new_line) {
- attron(COLOR_PAIR(2));
- addnstr(buffer, console_width);
- attroff(COLOR_PAIR(2));
+ if(with_colors) {
+ attron(COLOR_PAIR(2));
+ addnstr(buffer, console_width);
+ attroff(COLOR_PAIR(2));
+ } else {
+ attron(A_STANDOUT);
+ addnstr(buffer, console_width);
+ attroff(A_STANDOUT);
+ }
} else {
addnstr(buffer, console_width);
}
}
}
- *temporary_line = new_line;
if(motion != 0) {
*current_line = new_line;
}
}
- if(nb_printed_lines == 1) {
- addnstr("[no selection]\n", console_width);
- nb_printed_lines++;
- }
+ *temporary_line = new_line;
- if(no_blink) { // Erase the rest of the window. That's slightly ugly.
- int k = 0;
- while(k < console_width) {
- buffer[k++] = ' ';
- }
- buffer[k++] = '\n';
- buffer[k++] = '\0';
- for(int l = nb_printed_lines; l < console_height; l++) {
- addnstr(buffer, console_width);
- }
+ if(nb_printed_lines == 0) {
+ addnstr("[no selection]\n", console_width);
}
// Draw the modeline
sprintf(buffer, "%d/%d pattern: %s",
- nb_printed_lines - 1,
+ nb_printed_lines,
nb_lines,
pattern_list);
buffer[console_width] = '\0';
move(0, 0);
- attron(COLOR_PAIR(1));
- addnstr(buffer, console_width);
- attroff(COLOR_PAIR(1));
+ if(with_colors) {
+ attron(COLOR_PAIR(1));
+ addnstr(buffer, console_width);
+ attroff(COLOR_PAIR(1));
+ } else {
+ attron(A_REVERSE);
+ addnstr(buffer, console_width);
+ attroff(A_REVERSE);
+ }
// We are done
int main(int argc, char **argv) {
char buffer[buffer_size];
- char *lines[nb_lines_max];
- int no_blink = 0;
+ int color_fg_modeline, color_bg_modeline;
+ int color_fg_highlight, color_bg_highlight;
+
+ color_fg_modeline = COLOR_WHITE;
+ color_bg_modeline = COLOR_BLACK;
+ color_fg_highlight = COLOR_BLACK;
+ color_bg_highlight = COLOR_YELLOW;
+
+ setlocale(LC_ALL, "");
char input_filename[buffer_size], output_filename[buffer_size];
- strcpy(input_filename, "/dev/stdin");
- strcpy(output_filename, "/tmp/selector.out");
+
+ strcpy(input_filename, "");
+ strcpy(output_filename, "");
int i = 1;
while(i < argc) {
+
if(strcmp(argv[i], "-o") == 0) {
check_opt(argc, argv, i, 1, "<output filename>");
strncpy(output_filename, argv[i+1], buffer_size);
i++;
}
+ else if(strcmp(argv[i], "-m") == 0) {
+ with_colors = 0;
+ i++;
+ }
+
else if(strcmp(argv[i], "-f") == 0) {
check_opt(argc, argv, i, 1, "<input filename>");
strncpy(input_filename, argv[i+1], buffer_size);
i += 2;
}
+ else if(strcmp(argv[i], "-i") == 0) {
+ inverse_order = 1;
+ i++;
+ }
+
+ else if(strcmp(argv[i], "-z") == 0) {
+ zsh_history = 1;
+ i++;
+ }
+
else if(strcmp(argv[i], "-b") == 0) {
- no_blink = 1;
+ bash_history = 1;
+ i++;
+ }
+
+ else if(strcmp(argv[i], "-d") == 0) {
+ remove_duplicates = 1;
i++;
}
i += 2;
}
+ else if(strcmp(argv[i], "-c") == 0) {
+ check_opt(argc, argv, i, 4, "<fg modeline> <bg modeline> <fg highlight> <bg highlight>");
+ color_fg_modeline = atoi(argv[i+1]);
+ color_bg_modeline = atoi(argv[i+2]);
+ color_fg_highlight = atoi(argv[i+3]);
+ color_bg_highlight = atoi(argv[i+4]);
+ i += 5;
+ }
+
else {
- cerr << argv[0] << " [-h] [-o <output filename>] [-b] [-l <max number of lines>] [-s <pattern separator>] [-v]" << endl;
+ cerr << "Selector version " << VERSION
+ << endl
+ << "Written by Francois Fleuret <francois@fleuret.org>"
+ << endl
+ << argv[0]
+ << " [-h]"
+ << " [-v]"
+ << " [-m]"
+ << " [-d]"
+ << " [-z]"
+ << " [-i]"
+ << " [-c <fg modeline> <bg modeline> <fg highlight> <bg highlight>]"
+ << " [-o <output filename>]"
+ << " [-s <pattern separator>]"
+ << " [-l <max number of lines>]"
+ << " -f <input filename>"
+ << endl;
if(strcmp(argv[i], "-h") == 0) {
exit(0);
} else {
}
}
+ char **lines = new char *[nb_lines_max];
+
+ if(!input_filename[0]) {
+ cerr << "You must specify a input file with -f." << endl;
+ exit(1);
+ }
+
+ int nb_lines = 0;
+
ifstream file(input_filename);
if(file.fail()) {
- cerr << "Can not open \"" << input_filename << "\"" << endl;
+ cerr << "Can not open " << input_filename << endl;
return 1;
}
- int nb_lines = 0;
+ int hash_table_size = nb_lines_max * 10;
+ int *hash_table = 0;
+
+ if(remove_duplicates) {
+ hash_table = new_hash_table(hash_table_size);
+ }
+
while(nb_lines < nb_lines_max && !file.eof()) {
file.getline(buffer, buffer_size);
- lines[nb_lines] = new char[strlen(buffer) + 1];
- strcpy(lines[nb_lines], buffer);
- nb_lines++;
+ if(strcmp(buffer, "") != 0) {
+ char *s = buffer;
+
+ if(zsh_history && *s == ':') {
+ while(*s && *s != ';') s++;
+ if(*s == ';') s++;
+ }
+
+ if(bash_history && (*s == ' ' || (*s >= '0' && *s <= '9'))) {
+ while(*s == ' ' || (*s >= '0' && *s <= '9')) s++;
+ }
+
+ if(!hash_table || !test_and_add(s, nb_lines, lines, hash_table, hash_table_size)) {
+ lines[nb_lines] = new char[strlen(s) + 1];
+ strcpy(lines[nb_lines], s);
+ nb_lines++;
+ }
+ }
+ }
+
+ delete[] hash_table;
+
+ if(inverse_order) {
+ for(int i = 0; i < nb_lines/2; i++) {
+ char *s = lines[nb_lines - 1 - i];
+ lines[nb_lines - 1 - i] = lines[i];
+ lines[i] = s;
+ }
}
char patterns[buffer_size];
initscr();
- if(!has_colors()) {
- cerr << "No colors." << endl;
- return 1;
+ if(with_colors) {
+ if(has_colors()) {
+ start_color();
+ if(color_fg_modeline < 0 || color_fg_modeline >= COLORS ||
+ color_bg_modeline < 0 || color_bg_modeline >= COLORS ||
+ color_fg_highlight < 0 || color_bg_highlight >= COLORS ||
+ color_bg_highlight < 0 || color_bg_highlight >= COLORS) {
+ echo();
+ curs_set(1);
+ endwin();
+ cerr << "Color numbers have to be between 0 and " << COLORS - 1 << "." << endl;
+ exit(1);
+ }
+ init_pair(1, color_fg_modeline, color_bg_modeline);
+ init_pair(2, color_fg_highlight, color_bg_highlight);
+ } else {
+ with_colors = 0;
+ }
}
noecho();
- curs_set(0);
- keypad(stdscr, TRUE);
-
- start_color();
- // init_pair(1, COLOR_WHITE, COLOR_BLACK);
- init_pair(1, COLOR_WHITE, COLOR_GREEN);
- init_pair(2, COLOR_BLACK, COLOR_YELLOW);
+ curs_set(0); // Hide the cursor
+ keypad(stdscr, TRUE); // So that the arrow keys work
int key;
-
int current_line = 0, temporary_line = 0;
- update_screen(¤t_line, &temporary_line, 0, nb_lines, lines, patterns, no_blink);
+ update_screen(¤t_line, &temporary_line, 0, nb_lines, lines, patterns);
do {
int motion = 0;
- if(key >= ' ' && key <= 'z') {
+ if(key >= ' ' && key <= '~') {
patterns[patterns_point++] = key;
patterns[patterns_point] = '\0';
}
- else if(key == KEY_BACKSPACE || key == KEY_DC || key == '\b') {
+ else if(key == KEY_BACKSPACE || key == '\b' || key == '\7f' ||
+ key == KEY_DC || key == '\ 4') {
if(patterns_point > 0) {
patterns_point--;
patterns[patterns_point] = '\0';
}
update_screen(¤t_line, &temporary_line, motion,
- nb_lines, lines, patterns, no_blink);
+ nb_lines, lines, patterns);
+
} while(key != '\n' && key != KEY_ENTER && key != '\a');
echo();
curs_set(1);
endwin();
- if(output_to_vt_buffer) {
- if((key == KEY_ENTER || key == '\n') && temporary_line >= 0 && temporary_line < nb_lines) {
- char *tty = ttyname (STDIN_FILENO);
- int fd = open(tty, O_WRONLY);
-
- struct termios oldtio, newtio;
-
- if (fd >= 0) {
- // Save current port settings
- tcgetattr(fd,&oldtio);
- bzero(&newtio, sizeof(newtio));
- // Set input mode (non-canonical, *no echo*,...)
- tcflush(fd, TCIFLUSH);
- tcsetattr(fd,TCSANOW, &newtio);
- // Put the selected line in the tty input buffer
- for(char *k = lines[temporary_line]; *k; k++) {
- ioctl(fd, TIOCSTI, k);
- }
- // Restore the old settings
- tcsetattr(fd,TCSANOW, &oldtio);
- close(fd);
- } else {
- cerr << "Can not open " << tty << "." << endl;
- exit(1);
+ if((key == KEY_ENTER || key == '\n')) {
+
+ if(output_to_vt_buffer) {
+ if(temporary_line >= 0 && temporary_line < nb_lines) {
+ inject_into_tty_buffer(lines[temporary_line]);
}
}
- } else {
- ofstream out(output_filename);
- if(out.fail()) {
- cerr << "Can not open " << output_filename << " for writing." << endl;
- exit(1);
- } else {
- if((key == KEY_ENTER || key == '\n') && temporary_line >= 0 && temporary_line < nb_lines) {
- out << lines[temporary_line] << endl;
+
+ if(output_filename[0]) {
+ ofstream out(output_filename);
+ if(out.fail()) {
+ cerr << "Can not open " << output_filename << " for writing." << endl;
+ exit(1);
} else {
- out << endl;
+ if(temporary_line >= 0 && temporary_line < nb_lines) {
+ out << lines[temporary_line] << endl;
+ } else {
+ out << endl;
+ }
}
out.flush();
}
+
}
for(int l = 0; l < nb_lines; l++) {
delete[] lines[l];
}
+ delete[] lines;
exit(0);
}
projects / selector.git / blobdiff